Chaplets



United States Patent CHAPLETS Harvey F. Hohlfelder, In, Painesville,Ohio, assignor to The F. Hohlfelder Company, Cleveland, Ohio, acorporation of Ohio Filed Feb. 4, 1959, Ser. No. 791,155

6 Claims. (Cl. 22-184) This invention relates to chaplets, moreparticularly to an improved chaplet which provides support for a core inat least three directions.

Chaplets have long been used in the foundry art to support coresin'metal receiving cavities of molds, the chaplets being fused into thecasting when molten metal enters the mold. Some chaplets are designed tofit directly into the mold or the core or both. Other chaplets aredesigned to sit in the metal receiving cavity. Chaplets of the lattertype shown in the prior art have a hollow rectangular cross section, thetop portion thereof supportingthe core and. .the bottom portion restingon the floor of the mold cavity. Although this typeis' 'far easier touse than the former type, great difliculties have been encountered dueto shifting and even breakdown of the cores, particularly when longnarrow cores are used. My improved chaplets eliminate this diificulty byproviding support for the core in at least three directions.

I have shown the present preferred embodiments of my invention in theaccompanying drawings in which:

Figure 1 is a vertical section through a mold illustrating the manner inwhich my improved chaplets are used;

Figure 2 is an enlarged perspective view of one embodiment of myinvention;

Figure 3 is an enlarged perspective view of an alternative form of myimproved chaplet;

Figure 4 is an enlarged perspective view of another embodiment of myinvention; and

Figure 5 is an enlarged perspective view of another form of my improvedchaplet.

As shown in Figure 1, chaplets constructed according to my invention areused in normal casting operations in which the mold comprises a bottomboard and a drag 11 and cope 12 in which a mold cavity 13 has beenformed. The core 14 is supported substantially entirely within the moldcavity by chaplets 15 and 15a. While chaplet 15 embodies my invention,chaplet 15a, supporting the top of the core, may be any conventionalchapleta coil head shoulder radiator chaplet being shown. However, ifgreater support is required a chaplet embodying my invention could beused in place of the coil head chaplet 15a. Molten metal is poured intothe mold through a gate 16.

Referring to the embodiment of my improved chaplet shown in Figure 2, itcomprises a base having a centrally located portion thereof projectinginwardly to form a raised flat surface 21 on which the core rests. Legs22 extend from the base in the same direction as the projection, andportions of the legs intermediate the upper and lower portions areadapted to support the sides of the core. A portion 23 of the upper endof each of said legs above the level of the projection are offsetoutwardly to contact the side walls of the mold cavity and brace thechaplet to prevent lateral movement of the chaplet in the mold. Chapletsof this nature can be readily manufactured, requiring only a singlestamping operation from a thin strip of low melting alloy. The metal ispreferably perforated to any chilling effect, to permit the free flow ofmetal around the chaplet, and to prevent the entrapment of gas whichmight result in gas pockets in the casting.

Figure 3 shows an alternative form of chaplet embodying my inventioncomprising a base 30 having a centrally located portion thereofprojecting inwardly forming a flat surface 31 on which the core rests.Legs 32 extend from the base in the same direction as the pro jection,the sides of the legs supporting the-sides of the core. The upper endsof the legs are turned outwardly and extend downwardly substantiallyparallel to the upstanding portion of the legs as shown at 33. Thedownwardly extending portion 33 of each leg braces the chaplet againstthe side walls of the mold cavity to prevent lateral movement of thechaplet in the mold.

. Figure 4 shows another embodiment of my invention comrising a base 40having a centrally located portion projecting inwardly forming a flatsurface 41 on which the core rests. Legs 42 extend from the base in thesame direction as the projection bracing the chaplet against the sidewalls of the mold cavity to prevent lateral movement of the chaplet inthe cavity. The upper ends of the legs are turned over and extenddownwardly substantially parallel to'the upstanding portion of the legsto the inside of said legs as shown at 43. The downwardly extendingportions 43 of the legs support the sides of the core. 7

Another form of my invention is illustrated. in Figure 5. The core restson a base 50. Legs 51 extend from the base and support the side walls ofthe core. The upper ends of the legs are turned over outwardly andextend downwardly substantiall parallel to the upstanding portion of thelegs as shown at 52. The downwardly extending portion of the legs bracesthe chaplet against the side walls of the mold cavity to prevent lateralmovement of the chaplet in the cavity. The downwardly extending portionsof the legs extend below the base and are turned inwardly forming feet53 running substantially .parallel to the 'base which supports thechaplet on the floor of the mold cavity.

From the foregoing, it is readily apparent that my improved chapletsupports the core in the mold cavity in at least three directions, thecore sitting on the base of the chaplet and the legs thereof supportingthe side walls of the core. Furthermore, lateral movement of the chapletin the mold cavity is prevented. With this type of support, a corecannot shift in the mold cavity and breakdown of the core is veryunlikely.

While I have described the present preferred embodiments of myinvention, it is to be understood that it may be otherwise embodiedwithin the scope of the following claims.

I claim:

1. A chaplet for supporting a core in position in a mold cavity having afloor and side walls, said chaplet comprising: a base having at least aportion on which a core rests elevated above the floor of the moldcavity; and legs connected to opposed ends of said base, said legshaving portions above the elevated portion of the base, in planes normalto the plane of the elevated base portion which engage the sides of thecore, said legs also having portions in planes parallel to the planes ofthe sideengaging portion of the legs which engage the walls of the moldcavity.

2. A chaplet for providing three-way support for a core in a mold cavityhaving a floor and side walls, said chaplet comprising: a base having acentrally located projection forming a flat surface on which the corerests, and two legs connected to and extending fromthe base in the samedirection as said projection of the base, said legs supporting the sidesof the core, a portion of the upper ends of said legs above the level ofsaid projection of the base being oifset outwardly, the offset portionof said legs bracing the chaplet against the sidewalls of the moldcavity to prevent lateral movement of the chaplet in the mold cavity.

3. A chaplet for providing three-way support for a core in a mold cavityhaving a floor and side walls, said chaplet comprising: a base having acentrally located projection forming a flat surface on which the corerests, and two legs connected to and extending from the base in the samedirection as said projection of the base, said legs supporting the sidesof the core, the upper ends of said legs being turned over and extendingdownwardly substantially parallel to the upstanding portion of the legs,the downwardly extending portion of the legs bracing the chaplet againstthe side walls of the mold cavity to prevent lateral movement of thechaplet in the mold cavity.

4. A chaplet for providing three-way support for a core in a mold cavityhaving a floor and side walls, said chaplet comprising: a base having acentrally located projection forming a flat surface on which the corerests, and two legs connected to and extending from the base in the samedirection as said projection of the base, said legs bracing the chapletagainst the side walls of the mold cavity to prevent movement of thechaplet in the mold cavity, the upper ends of said legs being turnedover and extending downwardly substantially parallel to the upstandingportion of the legs, said downwardly extending portion of the legssupporting the sides of the core.

5. A chaplet for providing three-way support for a core in a mold cavityhaving a floor and side walls, said chaplet comprising: a base on whichthe core rests, and legs connected to and extending from the base whichsupport the sides of the core, the upper portion of the legs beingturned over and extending downwardly substantially parallel to theupstanding portion of the legs to a distance below the base and beingturned substantially parallel to the base, the downwardly extendingportion of the legs bracing the chaplet against the side walls of themold cavity to prevent lateral movement of the chaplet in the moldcavity and the portion thereof extending parallel to the base supportingthe chaplet in the mold cavity.

6. A chaplet for supporting a core in position in a mold cavity having afloor and side walls, said chaplet comprising: a base having at least aportion on which a core rests elevated above the floor of the moldcavity; and legs connected to opposed ends of said base, said legshaving portions extending above the elevated base portion which engagethe sides of the core, said legs also having portions which engage thewalls of the mold cavity.

References Cited in the file of this patent UNITED STATES PATENTS1,099,672 Sonnet June 9, 1914 1,459,464 Bradley June 19, 1923 1,877,049Raible Sept. 13, 1932 2,560,258 Snyder et al. July 10, 1951 FOREIGNPATENTS 183,516 Germany Oct. 25, 1955 336,575 Germany May 6, 1921 OTHERREFERENCES Fanner Chaplets publication, Catalog 1050, FarmerManufacturing Co., Brookside Park, Cleveland 1, Ohio.

